What should I do if an earbud does not reconnect to a device within the Bluetooth range?

The earbuds will automatically disconnect when they are out of the Bluetooth connection range. If you place the device back within the required range of the earbuds within 10 mins, it will re-connect successfully. If it has been more than 10 mins, it will timeout. You will then have to place the earbuds back into the case, wait 5 seconds, and reconnect.